W. Va. Code § 16-3-1 et seq.

Authority.State director of health authority is empowered to quarantine and to enforce regulations; state board of health authority to issue regulations to control infectious or contagious diseases. The state director of health is empowered to establish and strictly maintain quarantine at such places as he or she may deem proper and forbid and prevent the assembling of the people in any place, when the state director of health or any county or municipal health officer deems that the public health and safety so demand, and the state board of health may adopt rules and regulations to obstruct and prevent the introduction or spread of smallpox or other communicable or infectious diseases into or within the state, and the state director of health shall have the power to enforce these regulations by detention and arrest, if necessary. The county board of health of any county may declare quarantine therein, or in any particular district or place therein, whenever in their judgment it is necessary to prevent the spread of any communicable or infectious disease prevalent therein, or to prevent the introduction of any communicable or infectious disease prevailing in any other state, county or place, and of any and all persons and things likely to spread such infection.

W. Va. Code § 16-3-2

Penalties. Every person who shall fail or refuse to comply with any order made by such board under this section, and every person summoned as such guard who shall, without a lawful excuse, fail or refuse to obey the orders and directions of such board in enforcing said quarantine, shall be guilty of a misdemeanor, and, upon conviction thereof, shall be fined not less than $25 nor more than $200. In cases of emergency or actual necessity, and when the county commission or corporate authorities are from any cause unable to meet or to provide for the emergency or the necessity of the case, all actual expenditures necessary for local and county quarantine, as provided for in this section, shall be certified by the county board of health to the county commission, and the whole, or as much thereof as the said commission may deem right and proper, shall be paid out of the county treasury.

W. Va. Code § 16-3-1

Police Power and Limitations.The state director of health shall have power to enter into any town, city, factory, railroad train, steamboat or other place whatsoever, and enter upon and inspect private property for the purpose of investigating the sanitary and hygienic conditions and the presence of cases of infectious diseases, and may, at his discretion, take charge of any epidemic or endemic conditions, and enforce such regulations as the state board of health may prescribe. All expenses incurred in controlling any endemic or epidemic conditions shall be paid by the county or municipality in which such epidemic occurs.